net.sf.saxon.pattern

## Class IdrefTest

- java.lang.Object
- - net.sf.saxon.pattern.IdrefTest

- All Implemented Interfaces:
    Serializable, PatternFinder

      public class IdrefTest
      extends Object
      implements PatternFinder, Serializable

  IdrefTest is a test that cannot be represented directly in XPath or XSLT patterns, but which is used internally for matching IDREF nodes: it tests whether the node has the is-idref property
  Author:
    Michael H. Kay
  See Also:
    Serialized Form

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static IdrefTest` | `getInstance()` Get the singleton instance of this class
    `SequenceIterator` | `selectNodes(DocumentInfo doc, XPathContext context)` Select nodes in a document using this PatternFinder.
    `String` | `toString()`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Method Detail

    - #### getInstance

          public static IdrefTest getInstance()

      Get the singleton instance of this class

    - #### selectNodes

          public SequenceIterator selectNodes(DocumentInfo doc,
                                     XPathContext context)
                                       throws XPathException

      Select nodes in a document using this PatternFinder.
      Specified by:
        `selectNodes` in interface `PatternFinder`
      Parameters:
        `doc` - the document node at the root of a tree
        `context` - the dynamic evaluation context
      Returns:
        an iterator over the selected nodes in the document.
      Throws:
        `XPathException` - if a dynamic error is encountered

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`

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